UC2849DW

Power Supply Controllers, Monitors Overview

The UC2849DW is a secondary-side average current mode controller designed for offline power supplies. It operates within a supply voltage range of 8 V to 20 V and supports a maximum duty cycle of 90%. The device features a single output interface with a static operating current of 21 mA. It is housed in a surface-mount SOIC-16 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Power Supply Controllers, Monitors Feature Summary

• Implements secondary-side average current mode control for enhanced regulation accuracy
• Supports high duty cycle operation up to 90% suitable for various offline topologies
• Integrates precise current sensing capabilities directly on the secondary side

Power Supply Controllers, Monitors Applications

• Offline power supply systems requiring secondary-side feedback
• Flyback converter designs utilizing average current mode control
• Power adapters and chargers needing high efficiency and regulation

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure compatibility with your PCB footprint for the SOIC-16 surface mount configuration. Confirm that the component meets all required safety certifications for your target market before finalizing procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when secondary-side control is preferred over primary-side regulation for improved load transient response. It is suitable for applications requiring a wide input voltage range and high duty cycle capability. Consider thermal management requirements for the SOIC-16 package in enclosed designs.

Power Supply Controllers, Monitors Part Context

This part belongs to the UC2849 series of secondary-side controllers manufactured by Texas Instruments. It is distinct from primary-side PWM controllers like the UC2846, offering different control architectures tailored for isolated offline power conversion applications where secondary-side sensing provides superior performance.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers include UC2849N and UC2849DWG4. Verify pinout compatibility and electrical specifications before substitution.

Power Supply Controllers, Monitors FAQ

What control topology does the UC2849DW utilize?

It utilizes secondary-side average current mode control.

What is the maximum duty cycle supported by this controller?

The device supports a maximum duty cycle of 90%.